4.3BSD - /usr/src/old/ssp.c

   1: static char *sccsid = "@(#)ssp.c	4.1 (Berkeley) 10/1/80";
   2: #include <stdio.h>
   3: /*
   4:  * ssp - single space output
   5:  *
   6:  * Bill Joy UCB August 25, 1977
   7:  *
   8:  * Compress multiple empty lines to a single empty line.
   9:  * Option - compresses to nothing.
  10:  */
  11: 
  12: char    poof, hadsome;
  13: 
  14: int ibuf[256];
  15: 
  16: 
  17: main(argc, argv)
  18:     int argc;
  19:     char *argv[];
  20: {
  21:     register int c;
  22:     FILE *f;
  23: 
  24:     argc--, argv++;
  25:     do {
  26:         while (argc > 0 && argv[0][0] == '-') {
  27:             poof = 1;
  28:             argc--, argv++;
  29:         }
  30:     f = stdin;
  31:         if (argc > 0) {
  32:             if ((f=fopen(argv[0], "r")) == NULL) {
  33:                 fflush(f);
  34:                 perror(argv[0]);
  35:                 exit(1);
  36:             }
  37:             argc--, argv++;
  38:         }
  39:         for (;;) {
  40:             c = getc(f);
  41:             if (c == -1)
  42:                 break;
  43:             if (c != '\n') {
  44:                 hadsome = 1;
  45:                 putchar(c);
  46:                 continue;
  47:             }
  48:             /*
  49: 			 * Eat em up
  50: 			 */
  51:             if (hadsome)
  52:                 putchar('\n');
  53:             c = getc(f);
  54:             if (c == -1)
  55:                 break;
  56:             if (c != '\n') {
  57:                 putchar(c);
  58:                 hadsome = 1;
  59:                 continue;
  60:             }
  61:             do
  62:                 c = getc(f);
  63:             while (c == '\n');
  64:             if (!poof && hadsome)
  65:                 putchar('\n');
  66:             if (c == -1)
  67:                 break;
  68:             putchar(c);
  69:             hadsome = 1;
  70:         }
  71:     } while (argc > 0);
  72: }

Defined functions

Defined variables